Outdoor Purple Lemonade Auto

Little Purp is taking well to training, all available bud sites have been introduced to light and it looks like if nothing else, I'm going to have consistent bud sizing throughout. Feedings were limited to rainwater and a light top dressing of bone, fish, alfalfa, and kelp meals Purchased a new Ph meter and decided to check my soil, it's been consistent across my whole garden at 6.8. Thinking of adding a small dose of aluminum sulphate to lower my ph a hair. I feel like a 6.3-6.5 would be my goal before harvest in July.